1 files changed, 116 insertions, 0 deletions
diff --git a/tests/test87.c b/tests/test87.c
new file mode 100644
index 000000000..c17275ebc
--- /dev/null
+++ b/tests/test87.c
@@ -0,0 +1,116 @@
+#include <assert.h>
+#include <stdio.h>
+#include "uthash.h"
+
+typedef struct {
+    char name[32];
+    int weight;
+    UT_hash_handle hh;
+} hstruct_t;
+
+static int cmpfunc(const hstruct_t *s1, const hstruct_t *s2)
+{
+    return (s1->weight < s2->weight) ? -1 : (s1->weight > s2->weight);
+}
+
+// Test that CMPFUNC can safely be a macro.
+#define CMPFUNC(a,b) cmpfunc(a,b)
+
+void printtable(const hstruct_t *hTable)
+{
+    const hstruct_t *search, *tmp;
+    HASH_ITER(hh, hTable, search, tmp) {
+        printf("%d: %s\n", search->weight, search->name);
+    }
+    printf("###\n");
+}
+
+void delitem(hstruct_t **hTable, const char *name)
+{
+    hstruct_t *item;
+    HASH_FIND_STR(*hTable, name, item);
+    HASH_DEL(*hTable, item);
+}
+
+int main()
+{
+    hstruct_t *hTable = NULL;
+    hstruct_t *replaced = NULL;
+    unsigned hashvalue;
+
+    hstruct_t tst[] = {
+        {"muh1", 2,   {0}},
+        {"muh2", 8,   {0}},
+        {"muh3", 1,   {0}},
+        {"muh4", 8,   {0}},
+        {"muh5", 3,   {0}},
+        {"muh6", 5,   {0}},
+        {"muh7", 6,   {0}},
+        {"muh8", 15,  {0}},
+        {"muh9", 6,   {0}},
+        {"muh10", 9,  {0}},
+        {"muh11", 10, {0}},
+        {"muh12", 43, {0}},
+        {"muh12", 7,  {0}}
+    };
+
+    int index;
+    for (index = 0; index < 11; ++index) {
+        HASH_ADD_INORDER(hh, hTable, name[0], strlen(tst[index].name), &tst[index], CMPFUNC);
+    }
+
+    // test HASH_ADD_BYHASHVALUE_INORDER
+    HASH_VALUE(tst[11].name, strlen(tst[11].name), hashvalue);
+    HASH_ADD_BYHASHVALUE_INORDER(hh, hTable, name[0], strlen(tst[11].name), hashvalue, &tst[11], CMPFUNC);
+
+    printtable(hTable);
+
+    // replace "43: muh12" with "7: muh12"
+    HASH_REPLACE_INORDER(hh, hTable, name[0], strlen(tst[11].name), &tst[12], replaced, CMPFUNC);
+    assert(replaced == &tst[11]);
+
+    printtable(hTable);
+
+    // rehash "1: muh3" to "9: muh3"
+    tst[2].weight = 9;
+    HASH_REPLACE_INORDER(hh, hTable, name[0], strlen(tst[2].name), &tst[2], replaced, CMPFUNC);
+    assert(replaced == &tst[2]);
+
+    printtable(hTable);
+
+    // rehash "6: muh7" to "16: muh7"
+    tst[6].weight = 16;
+    HASH_VALUE(&tst[6].name[0], strlen(tst[6].name), hashvalue);
+    HASH_REPLACE_BYHASHVALUE_INORDER(hh, hTable, name[0], strlen(tst[6].name), hashvalue, &tst[6], replaced, CMPFUNC);
+    assert(replaced == &tst[6]);
+
+    printtable(hTable);
+
+    // remove "8: muh2"...
+    HASH_DELETE(hh, hTable, &tst[1]);
+
+    printtable(hTable);
+
+    // ...and then reinsert "8: muh2"
+    HASH_VALUE(tst[1].name, strlen(tst[1].name), hashvalue);
+    HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, hTable, tst[1].name, strlen(tst[1].name), hashvalue, &tst[1], CMPFUNC);
+
+    printtable(hTable);
+
+    delitem(&hTable, "muh1");
+    delitem(&hTable, "muh7");
+    delitem(&hTable, "muh3");
+    delitem(&hTable, "muh9");
+    delitem(&hTable, "muh2");
+    delitem(&hTable, "muh11");
+    delitem(&hTable, "muh4");
+    delitem(&hTable, "muh6");
+    delitem(&hTable, "muh5");
+    delitem(&hTable, "muh8");
+    delitem(&hTable, "muh10");
+    delitem(&hTable, "muh12");
+
+    printtable(hTable);
+
+    return 0;
+}